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Message-ID: <CAHp75Ve5QS-vtWG3jnZwaFdwv9myGMvMRKXyRtvzwDoNkq0zOQ@mail.gmail.com>
Date: Fri, 12 Nov 2021 23:22:02 +0200
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc: Serge Semin <fancer.lancer@...il.com>,
Mark Brown <broonie@...nel.org>,
Nandhini Srikandan <nandhini.srikandan@...el.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Andy Shevchenko <andy@...nel.org>,
linux-spi <linux-spi@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/4] spi: dw: Put the driver entities naming in order
On Fri, Nov 12, 2021 at 10:51 PM Serge Semin
<Sergey.Semin@...kalelectronics.ru> wrote:
>
> Mostly due to a long driver history it's methods and macro names look a
> bit messy. In particularly that concerns the code their prefixes. A
> biggest part of the driver functions and macros have got the dw_spi/DW_SPI
> prefixes. But there are some entities which have been just
> "spi_/SPI_"-prefixed. Especially that concerns the CSR and their fields
> macro definitions. It makes the code harder to comprehend since such
> methods and macros can be easily confused with the global SPI-subsystem
> exports. In this case the only possible way to more or less quickly
> distinguish one naming space from another is either by context or by the
> argument type, which most of the times isn't that easy anyway. In addition
> to that a new DW SSI IP-core support has been added in the framework of
> commit e539f435cb9c ("spi: dw: Add support for DesignWare DWC_ssi"), which
> introduced a new set or macro-prefixes to describe CTRLR0-specific fields
> and worsen the situation. Finally there are methods with
> no DW SPI driver-reference prefix at all, that make the code reading even
> harder. So in order to ease the driver hacking let's bring the code naming
> to a common base:
> 1) Each method is supposed to have "dw_spi_" prefix so to be easily
> distinguished from the kernel API, e.g. SPI-subsystem methods and macros.
> (Exception is the local implementation of the readl/writel methods since
> being just the regspace accessors.)
> 2) Each generically used macro should have DW_SPI_-prefix thus being
> easily comprehended as the local driver definition.
> 3) DW APB SSI and DW SSI specific macros should have prefixes as DW_PSSI_
In the compatible strings the parameter has "assi" and not "pssi".
What did I miss?
> and DW_HSSI_ respectively so referring to the system buses they support
> (APB and AHB similarly to the DT clocks naming like pclk, hclk).
>
> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
>
> ---
>
> Folks, any ideas of a better naming scheme especially for the DW APB SSI
> and DW SSI specific macros are very welcome.
> ---
> drivers/spi/spi-dw-bt1.c | 8 +--
> drivers/spi/spi-dw-core.c | 138 ++++++++++++++++++------------------
> drivers/spi/spi-dw-dma.c | 50 ++++++-------
> drivers/spi/spi-dw-mmio.c | 20 +++---
> drivers/spi/spi-dw-pci.c | 59 ++++++++--------
> drivers/spi/spi-dw.h | 145 +++++++++++++++++++-------------------
> 6 files changed, 211 insertions(+), 209 deletions(-)
>
> diff --git a/drivers/spi/spi-dw-bt1.c b/drivers/spi/spi-dw-bt1.c
> index 5be6b7b80c21..0411088dc443 100644
> --- a/drivers/spi/spi-dw-bt1.c
> +++ b/drivers/spi/spi-dw-bt1.c
> @@ -123,7 +123,7 @@ static ssize_t dw_spi_bt1_dirmap_read(struct spi_mem_dirmap_desc *desc,
> len = min_t(size_t, len, dwsbt1->map_len - offs);
>
> /* Collect the controller configuration required by the operation */
> - cfg.tmode = SPI_TMOD_EPROMREAD;
> + cfg.tmode = DW_SPI_CTRLR0_TMOD_EPROMREAD;
> cfg.dfs = 8;
> cfg.ndf = 4;
> cfg.freq = mem->spi->max_speed_hz;
> @@ -131,13 +131,13 @@ static ssize_t dw_spi_bt1_dirmap_read(struct spi_mem_dirmap_desc *desc,
> /* Make sure the corresponding CS is de-asserted on transmission */
> dw_spi_set_cs(mem->spi, false);
>
> - spi_enable_chip(dws, 0);
> + dw_spi_enable_chip(dws, 0);
>
> dw_spi_update_config(dws, mem->spi, &cfg);
>
> - spi_umask_intr(dws, SPI_INT_RXFI);
> + dw_spi_umask_intr(dws, DW_SPI_INT_RXFI);
>
> - spi_enable_chip(dws, 1);
> + dw_spi_enable_chip(dws, 1);
>
> /*
> * Enable the transparent mode of the System Boot Controller.
> diff --git a/drivers/spi/spi-dw-core.c b/drivers/spi/spi-dw-core.c
> index f5446d9c6f27..4d91ffb5c0d8 100644
> --- a/drivers/spi/spi-dw-core.c
> +++ b/drivers/spi/spi-dw-core.c
> @@ -24,7 +24,7 @@
> #endif
>
> /* Slave spi_device related */
> -struct chip_data {
> +struct dw_spi_chip_data {
> u32 cr0;
> u32 rx_sample_dly; /* RX sample delay */
> };
> @@ -109,7 +109,7 @@ void dw_spi_set_cs(struct spi_device *spi, bool enable)
> EXPORT_SYMBOL_GPL(dw_spi_set_cs);
>
> /* Return the max entries we can fill into tx fifo */
> -static inline u32 tx_max(struct dw_spi *dws)
> +static inline u32 dw_spi_tx_max(struct dw_spi *dws)
> {
> u32 tx_room, rxtx_gap;
>
> @@ -129,14 +129,14 @@ static inline u32 tx_max(struct dw_spi *dws)
> }
>
> /* Return the max entries we should read out of rx fifo */
> -static inline u32 rx_max(struct dw_spi *dws)
> +static inline u32 dw_spi_rx_max(struct dw_spi *dws)
> {
> return min_t(u32, dws->rx_len, dw_readl(dws, DW_SPI_RXFLR));
> }
>
> static void dw_writer(struct dw_spi *dws)
> {
> - u32 max = tx_max(dws);
> + u32 max = dw_spi_tx_max(dws);
> u32 txw = 0;
>
> while (max--) {
> @@ -157,7 +157,7 @@ static void dw_writer(struct dw_spi *dws)
>
> static void dw_reader(struct dw_spi *dws)
> {
> - u32 max = rx_max(dws);
> + u32 max = dw_spi_rx_max(dws);
> u32 rxw;
>
> while (max--) {
> @@ -186,24 +186,24 @@ int dw_spi_check_status(struct dw_spi *dws, bool raw)
> else
> irq_status = dw_readl(dws, DW_SPI_ISR);
>
> - if (irq_status & SPI_INT_RXOI) {
> + if (irq_status & DW_SPI_INT_RXOI) {
> dev_err(&dws->master->dev, "RX FIFO overflow detected\n");
> ret = -EIO;
> }
>
> - if (irq_status & SPI_INT_RXUI) {
> + if (irq_status & DW_SPI_INT_RXUI) {
> dev_err(&dws->master->dev, "RX FIFO underflow detected\n");
> ret = -EIO;
> }
>
> - if (irq_status & SPI_INT_TXOI) {
> + if (irq_status & DW_SPI_INT_TXOI) {
> dev_err(&dws->master->dev, "TX FIFO overflow detected\n");
> ret = -EIO;
> }
>
> /* Generically handle the erroneous situation */
> if (ret) {
> - spi_reset_chip(dws);
> + dw_spi_reset_chip(dws);
> if (dws->master->cur_msg)
> dws->master->cur_msg->status = ret;
> }
> @@ -230,7 +230,7 @@ static irqreturn_t dw_spi_transfer_handler(struct dw_spi *dws)
> */
> dw_reader(dws);
> if (!dws->rx_len) {
> - spi_mask_intr(dws, 0xff);
> + dw_spi_mask_intr(dws, 0xff);
> spi_finalize_current_transfer(dws->master);
> } else if (dws->rx_len <= dw_readl(dws, DW_SPI_RXFTLR)) {
> dw_writel(dws, DW_SPI_RXFTLR, dws->rx_len - 1);
> @@ -241,10 +241,10 @@ static irqreturn_t dw_spi_transfer_handler(struct dw_spi *dws)
> * disabled after the data transmission is finished so not to
> * have the TXE IRQ flood at the final stage of the transfer.
> */
> - if (irq_status & SPI_INT_TXEI) {
> + if (irq_status & DW_SPI_INT_TXEI) {
> dw_writer(dws);
> if (!dws->tx_len)
> - spi_mask_intr(dws, SPI_INT_TXEI);
> + dw_spi_mask_intr(dws, DW_SPI_INT_TXEI);
> }
>
> return IRQ_HANDLED;
> @@ -260,7 +260,7 @@ static irqreturn_t dw_spi_irq(int irq, void *dev_id)
> return IRQ_NONE;
>
> if (!master->cur_msg) {
> - spi_mask_intr(dws, 0xff);
> + dw_spi_mask_intr(dws, 0xff);
> return IRQ_HANDLED;
> }
>
> @@ -271,37 +271,37 @@ static u32 dw_spi_prepare_cr0(struct dw_spi *dws, struct spi_device *spi)
> {
> u32 cr0 = 0;
>
> - if (!(dws->caps & DW_SPI_CAP_DWC_SSI)) {
> + if (!(dws->caps & DW_SPI_CAP_DWC_HSSI)) {
> /* CTRLR0[ 5: 4] Frame Format */
> - cr0 |= SPI_FRF_MOTO_SPI << SPI_FRF_OFFSET;
> + cr0 |= DW_SPI_CTRLR0_FRF_MOTO_SPI << DW_PSSI_CTRLR0_FRF_OFFSET;
>
> /*
> * SPI mode (SCPOL|SCPH)
> * CTRLR0[ 6] Serial Clock Phase
> * CTRLR0[ 7] Serial Clock Polarity
> */
> - cr0 |= ((spi->mode & SPI_CPOL) ? 1 : 0) << SPI_SCOL_OFFSET;
> - cr0 |= ((spi->mode & SPI_CPHA) ? 1 : 0) << SPI_SCPH_OFFSET;
> + cr0 |= ((spi->mode & SPI_CPOL) ? 1 : 0) << DW_PSSI_CTRLR0_SCOL_OFFSET;
> + cr0 |= ((spi->mode & SPI_CPHA) ? 1 : 0) << DW_PSSI_CTRLR0_SCPH_OFFSET;
>
> /* CTRLR0[11] Shift Register Loop */
> - cr0 |= ((spi->mode & SPI_LOOP) ? 1 : 0) << SPI_SRL_OFFSET;
> + cr0 |= ((spi->mode & SPI_LOOP) ? 1 : 0) << DW_PSSI_CTRLR0_SRL_OFFSET;
> } else {
> /* CTRLR0[ 7: 6] Frame Format */
> - cr0 |= SPI_FRF_MOTO_SPI << DWC_SSI_CTRLR0_FRF_OFFSET;
> + cr0 |= DW_SPI_CTRLR0_FRF_MOTO_SPI << DW_HSSI_CTRLR0_FRF_OFFSET;
>
> /*
> * SPI mode (SCPOL|SCPH)
> * CTRLR0[ 8] Serial Clock Phase
> * CTRLR0[ 9] Serial Clock Polarity
> */
> - cr0 |= ((spi->mode & SPI_CPOL) ? 1 : 0) << DWC_SSI_CTRLR0_SCPOL_OFFSET;
> - cr0 |= ((spi->mode & SPI_CPHA) ? 1 : 0) << DWC_SSI_CTRLR0_SCPH_OFFSET;
> + cr0 |= ((spi->mode & SPI_CPOL) ? 1 : 0) << DW_HSSI_CTRLR0_SCPOL_OFFSET;
> + cr0 |= ((spi->mode & SPI_CPHA) ? 1 : 0) << DW_HSSI_CTRLR0_SCPH_OFFSET;
>
> /* CTRLR0[13] Shift Register Loop */
> - cr0 |= ((spi->mode & SPI_LOOP) ? 1 : 0) << DWC_SSI_CTRLR0_SRL_OFFSET;
> + cr0 |= ((spi->mode & SPI_LOOP) ? 1 : 0) << DW_HSSI_CTRLR0_SRL_OFFSET;
>
> if (dws->caps & DW_SPI_CAP_KEEMBAY_MST)
> - cr0 |= DWC_SSI_CTRLR0_KEEMBAY_MST;
> + cr0 |= DW_HSSI_CTRLR0_KEEMBAY_MST;
> }
>
> return cr0;
> @@ -310,7 +310,7 @@ static u32 dw_spi_prepare_cr0(struct dw_spi *dws, struct spi_device *spi)
> void dw_spi_update_config(struct dw_spi *dws, struct spi_device *spi,
> struct dw_spi_cfg *cfg)
> {
> - struct chip_data *chip = spi_get_ctldata(spi);
> + struct dw_spi_chip_data *chip = spi_get_ctldata(spi);
> u32 cr0 = chip->cr0;
> u32 speed_hz;
> u16 clk_div;
> @@ -318,16 +318,17 @@ void dw_spi_update_config(struct dw_spi *dws, struct spi_device *spi,
> /* CTRLR0[ 4/3: 0] or CTRLR0[ 20: 16] Data Frame Size */
> cr0 |= (cfg->dfs - 1) << dws->dfs_offset;
>
> - if (!(dws->caps & DW_SPI_CAP_DWC_SSI))
> + if (!(dws->caps & DW_SPI_CAP_DWC_HSSI))
> /* CTRLR0[ 9:8] Transfer Mode */
> - cr0 |= cfg->tmode << SPI_TMOD_OFFSET;
> + cr0 |= cfg->tmode << DW_PSSI_CTRLR0_TMOD_OFFSET;
> else
> /* CTRLR0[11:10] Transfer Mode */
> - cr0 |= cfg->tmode << DWC_SSI_CTRLR0_TMOD_OFFSET;
> + cr0 |= cfg->tmode << DW_HSSI_CTRLR0_TMOD_OFFSET;
>
> dw_writel(dws, DW_SPI_CTRLR0, cr0);
>
> - if (cfg->tmode == SPI_TMOD_EPROMREAD || cfg->tmode == SPI_TMOD_RO)
> + if (cfg->tmode == DW_SPI_CTRLR0_TMOD_EPROMREAD ||
> + cfg->tmode == DW_SPI_CTRLR0_TMOD_RO)
> dw_writel(dws, DW_SPI_CTRLR1, cfg->ndf ? cfg->ndf - 1 : 0);
>
> /* Note DW APB SSI clock divider doesn't support odd numbers */
> @@ -335,7 +336,7 @@ void dw_spi_update_config(struct dw_spi *dws, struct spi_device *spi,
> speed_hz = dws->max_freq / clk_div;
>
> if (dws->current_freq != speed_hz) {
> - spi_set_clk(dws, clk_div);
> + dw_spi_set_clk(dws, clk_div);
> dws->current_freq = speed_hz;
> }
>
> @@ -363,9 +364,9 @@ static void dw_spi_irq_setup(struct dw_spi *dws)
>
> dws->transfer_handler = dw_spi_transfer_handler;
>
> - imask = SPI_INT_TXEI | SPI_INT_TXOI | SPI_INT_RXUI | SPI_INT_RXOI |
> - SPI_INT_RXFI;
> - spi_umask_intr(dws, imask);
> + imask = DW_SPI_INT_TXEI | DW_SPI_INT_TXOI |
> + DW_SPI_INT_RXUI | DW_SPI_INT_RXOI | DW_SPI_INT_RXFI;
> + dw_spi_umask_intr(dws, imask);
> }
>
> /*
> @@ -405,11 +406,12 @@ static int dw_spi_poll_transfer(struct dw_spi *dws,
> }
>
> static int dw_spi_transfer_one(struct spi_controller *master,
> - struct spi_device *spi, struct spi_transfer *transfer)
> + struct spi_device *spi,
> + struct spi_transfer *transfer)
> {
> struct dw_spi *dws = spi_controller_get_devdata(master);
> struct dw_spi_cfg cfg = {
> - .tmode = SPI_TMOD_TR,
> + .tmode = DW_SPI_CTRLR0_TMOD_TR,
> .dfs = transfer->bits_per_word,
> .freq = transfer->speed_hz,
> };
> @@ -425,7 +427,7 @@ static int dw_spi_transfer_one(struct spi_controller *master,
> /* Ensure the data above is visible for all CPUs */
> smp_mb();
>
> - spi_enable_chip(dws, 0);
> + dw_spi_enable_chip(dws, 0);
>
> dw_spi_update_config(dws, spi, &cfg);
>
> @@ -436,7 +438,7 @@ static int dw_spi_transfer_one(struct spi_controller *master,
> dws->dma_mapped = master->cur_msg_mapped;
>
> /* For poll mode just disable all interrupts */
> - spi_mask_intr(dws, 0xff);
> + dw_spi_mask_intr(dws, 0xff);
>
> if (dws->dma_mapped) {
> ret = dws->dma_ops->dma_setup(dws, transfer);
> @@ -444,7 +446,7 @@ static int dw_spi_transfer_one(struct spi_controller *master,
> return ret;
> }
>
> - spi_enable_chip(dws, 1);
> + dw_spi_enable_chip(dws, 1);
>
> if (dws->dma_mapped)
> return dws->dma_ops->dma_transfer(dws, transfer);
> @@ -457,20 +459,20 @@ static int dw_spi_transfer_one(struct spi_controller *master,
> }
>
> static void dw_spi_handle_err(struct spi_controller *master,
> - struct spi_message *msg)
> + struct spi_message *msg)
> {
> struct dw_spi *dws = spi_controller_get_devdata(master);
>
> if (dws->dma_mapped)
> dws->dma_ops->dma_stop(dws);
>
> - spi_reset_chip(dws);
> + dw_spi_reset_chip(dws);
> }
>
> static int dw_spi_adjust_mem_op_size(struct spi_mem *mem, struct spi_mem_op *op)
> {
> if (op->data.dir == SPI_MEM_DATA_IN)
> - op->data.nbytes = clamp_val(op->data.nbytes, 0, SPI_NDF_MASK + 1);
> + op->data.nbytes = clamp_val(op->data.nbytes, 0, DW_SPI_NDF_MASK + 1);
>
> return 0;
> }
> @@ -498,7 +500,7 @@ static int dw_spi_init_mem_buf(struct dw_spi *dws, const struct spi_mem_op *op)
> if (op->data.dir == SPI_MEM_DATA_OUT)
> len += op->data.nbytes;
>
> - if (len <= SPI_BUF_SIZE) {
> + if (len <= DW_SPI_BUF_SIZE) {
> out = dws->buf;
> } else {
> out = kzalloc(len, GFP_KERNEL);
> @@ -512,9 +514,9 @@ static int dw_spi_init_mem_buf(struct dw_spi *dws, const struct spi_mem_op *op)
> * single buffer in order to speed the data transmission up.
> */
> for (i = 0; i < op->cmd.nbytes; ++i)
> - out[i] = SPI_GET_BYTE(op->cmd.opcode, op->cmd.nbytes - i - 1);
> + out[i] = DW_SPI_GET_BYTE(op->cmd.opcode, op->cmd.nbytes - i - 1);
> for (j = 0; j < op->addr.nbytes; ++i, ++j)
> - out[i] = SPI_GET_BYTE(op->addr.val, op->addr.nbytes - j - 1);
> + out[i] = DW_SPI_GET_BYTE(op->addr.val, op->addr.nbytes - j - 1);
> for (j = 0; j < op->dummy.nbytes; ++i, ++j)
> out[i] = 0x0;
>
> @@ -587,7 +589,7 @@ static int dw_spi_write_then_read(struct dw_spi *dws, struct spi_device *spi)
> entries = readl_relaxed(dws->regs + DW_SPI_RXFLR);
> if (!entries) {
> sts = readl_relaxed(dws->regs + DW_SPI_RISR);
> - if (sts & SPI_INT_RXOI) {
> + if (sts & DW_SPI_INT_RXOI) {
> dev_err(&dws->master->dev, "FIFO overflow on Rx\n");
> return -EIO;
> }
> @@ -603,12 +605,12 @@ static int dw_spi_write_then_read(struct dw_spi *dws, struct spi_device *spi)
>
> static inline bool dw_spi_ctlr_busy(struct dw_spi *dws)
> {
> - return dw_readl(dws, DW_SPI_SR) & SR_BUSY;
> + return dw_readl(dws, DW_SPI_SR) & DW_SPI_SR_BUSY;
> }
>
> static int dw_spi_wait_mem_op_done(struct dw_spi *dws)
> {
> - int retry = SPI_WAIT_RETRIES;
> + int retry = DW_SPI_WAIT_RETRIES;
> struct spi_delay delay;
> unsigned long ns, us;
> u32 nents;
> @@ -638,9 +640,9 @@ static int dw_spi_wait_mem_op_done(struct dw_spi *dws)
>
> static void dw_spi_stop_mem_op(struct dw_spi *dws, struct spi_device *spi)
> {
> - spi_enable_chip(dws, 0);
> + dw_spi_enable_chip(dws, 0);
> dw_spi_set_cs(spi, true);
> - spi_enable_chip(dws, 1);
> + dw_spi_enable_chip(dws, 1);
> }
>
> /*
> @@ -673,19 +675,19 @@ static int dw_spi_exec_mem_op(struct spi_mem *mem, const struct spi_mem_op *op)
> cfg.dfs = 8;
> cfg.freq = clamp(mem->spi->max_speed_hz, 0U, dws->max_mem_freq);
> if (op->data.dir == SPI_MEM_DATA_IN) {
> - cfg.tmode = SPI_TMOD_EPROMREAD;
> + cfg.tmode = DW_SPI_CTRLR0_TMOD_EPROMREAD;
> cfg.ndf = op->data.nbytes;
> } else {
> - cfg.tmode = SPI_TMOD_TO;
> + cfg.tmode = DW_SPI_CTRLR0_TMOD_TO;
> }
>
> - spi_enable_chip(dws, 0);
> + dw_spi_enable_chip(dws, 0);
>
> dw_spi_update_config(dws, mem->spi, &cfg);
>
> - spi_mask_intr(dws, 0xff);
> + dw_spi_mask_intr(dws, 0xff);
>
> - spi_enable_chip(dws, 1);
> + dw_spi_enable_chip(dws, 1);
>
> /*
> * DW APB SSI controller has very nasty peculiarities. First originally
> @@ -768,7 +770,7 @@ static void dw_spi_init_mem_ops(struct dw_spi *dws)
> static int dw_spi_setup(struct spi_device *spi)
> {
> struct dw_spi *dws = spi_controller_get_devdata(spi->controller);
> - struct chip_data *chip;
> + struct dw_spi_chip_data *chip;
>
> /* Only alloc on first setup */
> chip = spi_get_ctldata(spi);
> @@ -776,7 +778,7 @@ static int dw_spi_setup(struct spi_device *spi)
> struct dw_spi *dws = spi_controller_get_devdata(spi->controller);
> u32 rx_sample_dly_ns;
>
> - chip = kzalloc(sizeof(struct chip_data), GFP_KERNEL);
> + chip = kzalloc(sizeof(*chip), GFP_KERNEL);
> if (!chip)
> return -ENOMEM;
> spi_set_ctldata(spi, chip);
> @@ -803,16 +805,16 @@ static int dw_spi_setup(struct spi_device *spi)
>
> static void dw_spi_cleanup(struct spi_device *spi)
> {
> - struct chip_data *chip = spi_get_ctldata(spi);
> + struct dw_spi_chip_data *chip = spi_get_ctldata(spi);
>
> kfree(chip);
> spi_set_ctldata(spi, NULL);
> }
>
> /* Restart the controller, disable all interrupts, clean rx fifo */
> -static void spi_hw_init(struct device *dev, struct dw_spi *dws)
> +static void dw_spi_hw_init(struct device *dev, struct dw_spi *dws)
> {
> - spi_reset_chip(dws);
> + dw_spi_reset_chip(dws);
>
> /*
> * Try to detect the FIFO depth if not set by interface driver,
> @@ -837,18 +839,18 @@ static void spi_hw_init(struct device *dev, struct dw_spi *dws)
> * writability. Note DWC SSI controller also has the extended DFS, but
> * with zero offset.
> */
> - if (!(dws->caps & DW_SPI_CAP_DWC_SSI)) {
> + if (!(dws->caps & DW_SPI_CAP_DWC_HSSI)) {
> u32 cr0, tmp = dw_readl(dws, DW_SPI_CTRLR0);
>
> - spi_enable_chip(dws, 0);
> + dw_spi_enable_chip(dws, 0);
> dw_writel(dws, DW_SPI_CTRLR0, 0xffffffff);
> cr0 = dw_readl(dws, DW_SPI_CTRLR0);
> dw_writel(dws, DW_SPI_CTRLR0, tmp);
> - spi_enable_chip(dws, 1);
> + dw_spi_enable_chip(dws, 1);
>
> - if (!(cr0 & SPI_DFS_MASK)) {
> + if (!(cr0 & DW_PSSI_CTRLR0_DFS_MASK)) {
> dws->caps |= DW_SPI_CAP_DFS32;
> - dws->dfs_offset = SPI_DFS32_OFFSET;
> + dws->dfs_offset = DW_PSSI_CTRLR0_DFS32_OFFSET;
> dev_dbg(dev, "Detected 32-bits max data frame size\n");
> }
> } else {
> @@ -878,7 +880,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
> spi_controller_set_devdata(master, dws);
>
> /* Basic HW init */
> - spi_hw_init(dev, dws);
> + dw_spi_hw_init(dev, dws);
>
> ret = request_irq(dws->irq, dw_spi_irq, IRQF_SHARED, dev_name(dev),
> master);
> @@ -939,7 +941,7 @@ int dw_spi_add_host(struct device *dev, struct dw_spi *dws)
> err_dma_exit:
> if (dws->dma_ops && dws->dma_ops->dma_exit)
> dws->dma_ops->dma_exit(dws);
> - spi_enable_chip(dws, 0);
> + dw_spi_enable_chip(dws, 0);
> free_irq(dws->irq, master);
> err_free_master:
> spi_controller_put(master);
> @@ -956,7 +958,7 @@ void dw_spi_remove_host(struct dw_spi *dws)
> if (dws->dma_ops && dws->dma_ops->dma_exit)
> dws->dma_ops->dma_exit(dws);
>
> - spi_shutdown_chip(dws);
> + dw_spi_shutdown_chip(dws);
>
> free_irq(dws->irq, dws->master);
> }
> @@ -970,14 +972,14 @@ int dw_spi_suspend_host(struct dw_spi *dws)
> if (ret)
> return ret;
>
> - spi_shutdown_chip(dws);
> + dw_spi_shutdown_chip(dws);
> return 0;
> }
> EXPORT_SYMBOL_GPL(dw_spi_suspend_host);
>
> int dw_spi_resume_host(struct dw_spi *dws)
> {
> - spi_hw_init(&dws->master->dev, dws);
> + dw_spi_hw_init(&dws->master->dev, dws);
> return spi_controller_resume(dws->master);
> }
> EXPORT_SYMBOL_GPL(dw_spi_resume_host);
> diff --git a/drivers/spi/spi-dw-dma.c b/drivers/spi/spi-dw-dma.c
> index a09831c62192..fd6a2154d2ce 100644
> --- a/drivers/spi/spi-dw-dma.c
> +++ b/drivers/spi/spi-dw-dma.c
> @@ -17,10 +17,10 @@
>
> #include "spi-dw.h"
>
> -#define RX_BUSY 0
> -#define RX_BURST_LEVEL 16
> -#define TX_BUSY 1
> -#define TX_BURST_LEVEL 16
> +#define DW_SPI_RX_BUSY 0
> +#define DW_SPI_RX_BURST_LEVEL 16
> +#define DW_SPI_TX_BUSY 1
> +#define DW_SPI_TX_BURST_LEVEL 16
>
> static bool dw_spi_dma_chan_filter(struct dma_chan *chan, void *param)
> {
> @@ -45,7 +45,7 @@ static void dw_spi_dma_maxburst_init(struct dw_spi *dws)
> if (!ret && caps.max_burst)
> max_burst = caps.max_burst;
> else
> - max_burst = RX_BURST_LEVEL;
> + max_burst = DW_SPI_RX_BURST_LEVEL;
>
> dws->rxburst = min(max_burst, def_burst);
> dw_writel(dws, DW_SPI_DMARDLR, dws->rxburst - 1);
> @@ -54,7 +54,7 @@ static void dw_spi_dma_maxburst_init(struct dw_spi *dws)
> if (!ret && caps.max_burst)
> max_burst = caps.max_burst;
> else
> - max_burst = TX_BURST_LEVEL;
> + max_burst = DW_SPI_TX_BURST_LEVEL;
>
> /*
> * Having a Rx DMA channel serviced with higher priority than a Tx DMA
> @@ -226,13 +226,13 @@ static int dw_spi_dma_wait(struct dw_spi *dws, unsigned int len, u32 speed)
>
> static inline bool dw_spi_dma_tx_busy(struct dw_spi *dws)
> {
> - return !(dw_readl(dws, DW_SPI_SR) & SR_TF_EMPT);
> + return !(dw_readl(dws, DW_SPI_SR) & DW_SPI_SR_TF_EMPT);
> }
>
> static int dw_spi_dma_wait_tx_done(struct dw_spi *dws,
> struct spi_transfer *xfer)
> {
> - int retry = SPI_WAIT_RETRIES;
> + int retry = DW_SPI_WAIT_RETRIES;
> struct spi_delay delay;
> u32 nents;
>
> @@ -259,8 +259,8 @@ static void dw_spi_dma_tx_done(void *arg)
> {
> struct dw_spi *dws = arg;
>
> - clear_bit(TX_BUSY, &dws->dma_chan_busy);
> - if (test_bit(RX_BUSY, &dws->dma_chan_busy))
> + clear_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy);
> + if (test_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy))
> return;
>
> complete(&dws->dma_completion);
> @@ -304,19 +304,19 @@ static int dw_spi_dma_submit_tx(struct dw_spi *dws, struct scatterlist *sgl,
> return ret;
> }
>
> - set_bit(TX_BUSY, &dws->dma_chan_busy);
> + set_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy);
>
> return 0;
> }
>
> static inline bool dw_spi_dma_rx_busy(struct dw_spi *dws)
> {
> - return !!(dw_readl(dws, DW_SPI_SR) & SR_RF_NOT_EMPT);
> + return !!(dw_readl(dws, DW_SPI_SR) & DW_SPI_SR_RF_NOT_EMPT);
> }
>
> static int dw_spi_dma_wait_rx_done(struct dw_spi *dws)
> {
> - int retry = SPI_WAIT_RETRIES;
> + int retry = DW_SPI_WAIT_RETRIES;
> struct spi_delay delay;
> unsigned long ns, us;
> u32 nents;
> @@ -360,8 +360,8 @@ static void dw_spi_dma_rx_done(void *arg)
> {
> struct dw_spi *dws = arg;
>
> - clear_bit(RX_BUSY, &dws->dma_chan_busy);
> - if (test_bit(TX_BUSY, &dws->dma_chan_busy))
> + clear_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy);
> + if (test_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy))
> return;
>
> complete(&dws->dma_completion);
> @@ -405,7 +405,7 @@ static int dw_spi_dma_submit_rx(struct dw_spi *dws, struct scatterlist *sgl,
> return ret;
> }
>
> - set_bit(RX_BUSY, &dws->dma_chan_busy);
> + set_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy);
>
> return 0;
> }
> @@ -430,16 +430,16 @@ static int dw_spi_dma_setup(struct dw_spi *dws, struct spi_transfer *xfer)
> }
>
> /* Set the DMA handshaking interface */
> - dma_ctrl = SPI_DMA_TDMAE;
> + dma_ctrl = DW_SPI_DMACR_TDMAE;
> if (xfer->rx_buf)
> - dma_ctrl |= SPI_DMA_RDMAE;
> + dma_ctrl |= DW_SPI_DMACR_RDMAE;
> dw_writel(dws, DW_SPI_DMACR, dma_ctrl);
>
> /* Set the interrupt mask */
> - imr = SPI_INT_TXOI;
> + imr = DW_SPI_INT_TXOI;
> if (xfer->rx_buf)
> - imr |= SPI_INT_RXUI | SPI_INT_RXOI;
> - spi_umask_intr(dws, imr);
> + imr |= DW_SPI_INT_RXUI | DW_SPI_INT_RXOI;
> + dw_spi_umask_intr(dws, imr);
>
> reinit_completion(&dws->dma_completion);
>
> @@ -615,13 +615,13 @@ static int dw_spi_dma_transfer(struct dw_spi *dws, struct spi_transfer *xfer)
>
> static void dw_spi_dma_stop(struct dw_spi *dws)
> {
> - if (test_bit(TX_BUSY, &dws->dma_chan_busy)) {
> + if (test_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy)) {
> dmaengine_terminate_sync(dws->txchan);
> - clear_bit(TX_BUSY, &dws->dma_chan_busy);
> + clear_bit(DW_SPI_TX_BUSY, &dws->dma_chan_busy);
> }
> - if (test_bit(RX_BUSY, &dws->dma_chan_busy)) {
> + if (test_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy)) {
> dmaengine_terminate_sync(dws->rxchan);
> - clear_bit(RX_BUSY, &dws->dma_chan_busy);
> + clear_bit(DW_SPI_RX_BUSY, &dws->dma_chan_busy);
> }
> }
>
> diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
> index 17c06039a74d..435c91aecbca 100644
> --- a/drivers/spi/spi-dw-mmio.c
> +++ b/drivers/spi/spi-dw-mmio.c
> @@ -196,18 +196,18 @@ static int dw_spi_alpine_init(struct platform_device *pdev,
> return 0;
> }
>
> -static int dw_spi_dw_apb_init(struct platform_device *pdev,
> - struct dw_spi_mmio *dwsmmio)
> +static int dw_spi_assi_init(struct platform_device *pdev,
> + struct dw_spi_mmio *dwsmmio)
> {
> dw_spi_dma_setup_generic(&dwsmmio->dws);
>
> return 0;
> }
>
> -static int dw_spi_dwc_ssi_init(struct platform_device *pdev,
> - struct dw_spi_mmio *dwsmmio)
> +static int dw_spi_hssi_init(struct platform_device *pdev,
> + struct dw_spi_mmio *dwsmmio)
> {
> - dwsmmio->dws.caps = DW_SPI_CAP_DWC_SSI;
> + dwsmmio->dws.caps = DW_SPI_CAP_DWC_HSSI;
>
> dw_spi_dma_setup_generic(&dwsmmio->dws);
>
> @@ -217,7 +217,7 @@ static int dw_spi_dwc_ssi_init(struct platform_device *pdev,
> static int dw_spi_keembay_init(struct platform_device *pdev,
> struct dw_spi_mmio *dwsmmio)
> {
> - dwsmmio->dws.caps = DW_SPI_CAP_KEEMBAY_MST | DW_SPI_CAP_DWC_SSI;
> + dwsmmio->dws.caps = DW_SPI_CAP_KEEMBAY_MST | DW_SPI_CAP_DWC_HSSI;
>
> return 0;
> }
> @@ -342,12 +342,12 @@ static int dw_spi_mmio_remove(struct platform_device *pdev)
> }
>
> static const struct of_device_id dw_spi_mmio_of_match[] = {
> - { .compatible = "snps,dw-apb-ssi", .data = dw_spi_dw_apb_init},
> + { .compatible = "snps,dw-apb-ssi", .data = dw_spi_assi_init},
> { .compatible = "mscc,ocelot-spi", .data = dw_spi_mscc_ocelot_init},
> { .compatible = "mscc,jaguar2-spi", .data = dw_spi_mscc_jaguar2_init},
> { .compatible = "amazon,alpine-dw-apb-ssi", .data = dw_spi_alpine_init},
> - { .compatible = "renesas,rzn1-spi", .data = dw_spi_dw_apb_init},
> - { .compatible = "snps,dwc-ssi-1.01a", .data = dw_spi_dwc_ssi_init},
> + { .compatible = "renesas,rzn1-spi", .data = dw_spi_assi_init},
> + { .compatible = "snps,dwc-ssi-1.01a", .data = dw_spi_hssi_init},
> { .compatible = "intel,keembay-ssi", .data = dw_spi_keembay_init},
> { .compatible = "microchip,sparx5-spi", dw_spi_mscc_sparx5_init},
> { .compatible = "canaan,k210-spi", dw_spi_canaan_k210_init},
> @@ -357,7 +357,7 @@ MODULE_DEVICE_TABLE(of, dw_spi_mmio_of_match);
>
> #ifdef CONFIG_ACPI
> static const struct acpi_device_id dw_spi_mmio_acpi_match[] = {
> - {"HISI0173", (kernel_ulong_t)dw_spi_dw_apb_init},
> + {"HISI0173", (kernel_ulong_t)dw_spi_assi_init},
> {},
> };
> MODULE_DEVICE_TABLE(acpi, dw_spi_mmio_acpi_match);
> diff --git a/drivers/spi/spi-dw-pci.c b/drivers/spi/spi-dw-pci.c
> index 8a91cd58102f..e4a239bc3d36 100644
> --- a/drivers/spi/spi-dw-pci.c
> +++ b/drivers/spi/spi-dw-pci.c
> @@ -24,14 +24,14 @@
> #define CLK_SPI_CDIV_MASK 0x00000e00
> #define CLK_SPI_DISABLE_OFFSET 8
>
> -struct spi_pci_desc {
> +struct dw_spi_pci_desc {
> int (*setup)(struct dw_spi *);
> u16 num_cs;
> u16 bus_num;
> u32 max_freq;
> };
>
> -static int spi_mid_init(struct dw_spi *dws)
> +static int dw_spi_pci_mid_init(struct dw_spi *dws)
> {
> void __iomem *clk_reg;
> u32 clk_cdiv;
> @@ -53,36 +53,36 @@ static int spi_mid_init(struct dw_spi *dws)
> return 0;
> }
>
> -static int spi_generic_init(struct dw_spi *dws)
> +static int dw_spi_pci_generic_init(struct dw_spi *dws)
> {
> dw_spi_dma_setup_generic(dws);
>
> return 0;
> }
>
> -static struct spi_pci_desc spi_pci_mid_desc_1 = {
> - .setup = spi_mid_init,
> +static struct dw_spi_pci_desc dw_spi_pci_mid_desc_1 = {
> + .setup = dw_spi_pci_mid_init,
> .num_cs = 5,
> .bus_num = 0,
> };
>
> -static struct spi_pci_desc spi_pci_mid_desc_2 = {
> - .setup = spi_mid_init,
> +static struct dw_spi_pci_desc dw_spi_pci_mid_desc_2 = {
> + .setup = dw_spi_pci_mid_init,
> .num_cs = 2,
> .bus_num = 1,
> };
>
> -static struct spi_pci_desc spi_pci_ehl_desc = {
> - .setup = spi_generic_init,
> +static struct dw_spi_pci_desc dw_spi_pci_ehl_desc = {
> + .setup = dw_spi_pci_generic_init,
> .num_cs = 2,
> .bus_num = -1,
> .max_freq = 100000000,
> };
>
> -static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> +static int dw_spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> {
> + struct dw_spi_pci_desc *desc = (struct dw_spi_pci_desc *)ent->driver_data;
> struct dw_spi *dws;
> - struct spi_pci_desc *desc = (struct spi_pci_desc *)ent->driver_data;
> int pci_bar = 0;
> int ret;
>
> @@ -150,7 +150,7 @@ static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
> return ret;
> }
>
> -static void spi_pci_remove(struct pci_dev *pdev)
> +static void dw_spi_pci_remove(struct pci_dev *pdev)
> {
> struct dw_spi *dws = pci_get_drvdata(pdev);
>
> @@ -162,14 +162,14 @@ static void spi_pci_remove(struct pci_dev *pdev)
> }
>
> #ifdef CONFIG_PM_SLEEP
> -static int spi_suspend(struct device *dev)
> +static int dw_spi_pci_suspend(struct device *dev)
> {
> struct dw_spi *dws = dev_get_drvdata(dev);
>
> return dw_spi_suspend_host(dws);
> }
>
> -static int spi_resume(struct device *dev)
> +static int dw_spi_pci_resume(struct device *dev)
> {
> struct dw_spi *dws = dev_get_drvdata(dev);
>
> @@ -177,38 +177,37 @@ static int spi_resume(struct device *dev)
> }
> #endif
>
> -static SIMPLE_DEV_PM_OPS(dw_spi_pm_ops, spi_suspend, spi_resume);
> +static SIMPLE_DEV_PM_OPS(dw_spi_pci_pm_ops, dw_spi_pci_suspend, dw_spi_pci_resume);
>
> -static const struct pci_device_id pci_ids[] = {
> +static const struct pci_device_id dw_spi_pci_ids[] = {
> /* Intel MID platform SPI controller 0 */
> /*
> * The access to the device 8086:0801 is disabled by HW, since it's
> * exclusively used by SCU to communicate with MSIC.
> */
> /* Intel MID platform SPI controller 1 */
> - { PCI_VDEVICE(INTEL, 0x0800), (kernel_ulong_t)&spi_pci_mid_desc_1},
> + { PCI_VDEVICE(INTEL, 0x0800), (kernel_ulong_t)&dw_spi_pci_mid_desc_1},
> /* Intel MID platform SPI controller 2 */
> - { PCI_VDEVICE(INTEL, 0x0812), (kernel_ulong_t)&spi_pci_mid_desc_2},
> + { PCI_VDEVICE(INTEL, 0x0812), (kernel_ulong_t)&dw_spi_pci_mid_desc_2},
> /* Intel Elkhart Lake PSE SPI controllers */
> - { PCI_VDEVICE(INTEL, 0x4b84), (kernel_ulong_t)&spi_pci_ehl_desc},
> - { PCI_VDEVICE(INTEL, 0x4b85), (kernel_ulong_t)&spi_pci_ehl_desc},
> - { PCI_VDEVICE(INTEL, 0x4b86), (kernel_ulong_t)&spi_pci_ehl_desc},
> - { PCI_VDEVICE(INTEL, 0x4b87), (kernel_ulong_t)&spi_pci_ehl_desc},
> + { PCI_VDEVICE(INTEL, 0x4b84), (kernel_ulong_t)&dw_spi_pci_ehl_desc},
> + { PCI_VDEVICE(INTEL, 0x4b85), (kernel_ulong_t)&dw_spi_pci_ehl_desc},
> + { PCI_VDEVICE(INTEL, 0x4b86), (kernel_ulong_t)&dw_spi_pci_ehl_desc},
> + { PCI_VDEVICE(INTEL, 0x4b87), (kernel_ulong_t)&dw_spi_pci_ehl_desc},
> {},
> };
> -MODULE_DEVICE_TABLE(pci, pci_ids);
> +MODULE_DEVICE_TABLE(pci, dw_spi_pci_ids);
>
> -static struct pci_driver dw_spi_driver = {
> +static struct pci_driver dw_spi_pci_driver = {
> .name = DRIVER_NAME,
> - .id_table = pci_ids,
> - .probe = spi_pci_probe,
> - .remove = spi_pci_remove,
> + .id_table = dw_spi_pci_ids,
> + .probe = dw_spi_pci_probe,
> + .remove = dw_spi_pci_remove,
> .driver = {
> - .pm = &dw_spi_pm_ops,
> + .pm = &dw_spi_pci_pm_ops,
> },
> };
> -
> -module_pci_driver(dw_spi_driver);
> +module_pci_driver(dw_spi_pci_driver);
>
> MODULE_AUTHOR("Feng Tang <feng.tang@...el.com>");
> MODULE_DESCRIPTION("PCI interface driver for DW SPI Core");
> diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h
> index 467c342bfe56..893b78c43a50 100644
> --- a/drivers/spi/spi-dw.h
> +++ b/drivers/spi/spi-dw.h
> @@ -1,6 +1,6 @@
> /* SPDX-License-Identifier: GPL-2.0 */
> -#ifndef DW_SPI_HEADER_H
> -#define DW_SPI_HEADER_H
> +#ifndef __SPI_DW_H__
> +#define __SPI_DW_H__
>
> #include <linux/bits.h>
> #include <linux/completion.h>
> @@ -11,7 +11,7 @@
> #include <linux/spi/spi-mem.h>
> #include <linux/bitfield.h>
>
> -/* Register offsets */
> +/* Register offsets (Generic for both DWC APB SSI and DWC SSI IP-cores) */
> #define DW_SPI_CTRLR0 0x00
> #define DW_SPI_CTRLR1 0x04
> #define DW_SPI_SSIENR 0x08
> @@ -40,84 +40,85 @@
> #define DW_SPI_RX_SAMPLE_DLY 0xf0
> #define DW_SPI_CS_OVERRIDE 0xf4
>
> -/* Bit fields in CTRLR0 */
> -#define SPI_DFS_OFFSET 0
> -#define SPI_DFS_MASK GENMASK(3, 0)
> -#define SPI_DFS32_OFFSET 16
> -
> -#define SPI_FRF_OFFSET 4
> -#define SPI_FRF_MOTO_SPI 0x0
> -#define SPI_FRF_TI_SSP 0x1
> -#define SPI_FRF_NS_MICROWIRE 0x2
> -#define SPI_FRF_RESV 0x3
> -
> -#define SPI_MODE_OFFSET 6
> -#define SPI_SCPH_OFFSET 6
> -#define SPI_SCOL_OFFSET 7
> -
> -#define SPI_TMOD_OFFSET 8
> -#define SPI_TMOD_MASK (0x3 << SPI_TMOD_OFFSET)
> -#define SPI_TMOD_TR 0x0 /* xmit & recv */
> -#define SPI_TMOD_TO 0x1 /* xmit only */
> -#define SPI_TMOD_RO 0x2 /* recv only */
> -#define SPI_TMOD_EPROMREAD 0x3 /* eeprom read mode */
> -
> -#define SPI_SLVOE_OFFSET 10
> -#define SPI_SRL_OFFSET 11
> -#define SPI_CFS_OFFSET 12
> -
> -/* Bit fields in CTRLR0 based on DWC_ssi_databook.pdf v1.01a */
> -#define DWC_SSI_CTRLR0_SRL_OFFSET 13
> -#define DWC_SSI_CTRLR0_TMOD_OFFSET 10
> -#define DWC_SSI_CTRLR0_TMOD_MASK GENMASK(11, 10)
> -#define DWC_SSI_CTRLR0_SCPOL_OFFSET 9
> -#define DWC_SSI_CTRLR0_SCPH_OFFSET 8
> -#define DWC_SSI_CTRLR0_FRF_OFFSET 6
> -#define DWC_SSI_CTRLR0_DFS_OFFSET 0
> +/* Bit fields in CTRLR0 (DWC APB SSI) */
> +#define DW_PSSI_CTRLR0_DFS_OFFSET 0
> +#define DW_PSSI_CTRLR0_DFS_MASK GENMASK(3, 0)
> +#define DW_PSSI_CTRLR0_DFS32_OFFSET 16
> +
> +#define DW_PSSI_CTRLR0_FRF_OFFSET 4
> +#define DW_SPI_CTRLR0_FRF_MOTO_SPI 0x0
> +#define DW_SPI_CTRLR0_FRF_TI_SSP 0x1
> +#define DW_SPI_CTRLR0_FRF_NS_MICROWIRE 0x2
> +#define DW_SPI_CTRLR0_FRF_RESV 0x3
> +
> +#define DW_PSSI_CTRLR0_MODE_OFFSET 6
> +#define DW_PSSI_CTRLR0_SCPH_OFFSET 6
> +#define DW_PSSI_CTRLR0_SCOL_OFFSET 7
> +
> +#define DW_PSSI_CTRLR0_TMOD_OFFSET 8
> +#define DW_PSSI_CTRLR0_TMOD_MASK (0x3 << DW_PSSI_CTRLR0_TMOD_OFFSET)
> +#define DW_SPI_CTRLR0_TMOD_TR 0x0 /* xmit & recv */
> +#define DW_SPI_CTRLR0_TMOD_TO 0x1 /* xmit only */
> +#define DW_SPI_CTRLR0_TMOD_RO 0x2 /* recv only */
> +#define DW_SPI_CTRLR0_TMOD_EPROMREAD 0x3 /* eeprom read mode */
> +
> +#define DW_PSSI_CTRLR0_SLVOE_OFFSET 10
> +#define DW_PSSI_CTRLR0_SRL_OFFSET 11
> +#define DW_PSSI_CTRLR0_CFS_OFFSET 12
> +
> +/* Bit fields in CTRLR0 (DWC SSI with AHB interface) */
> +#define DW_HSSI_CTRLR0_SRL_OFFSET 13
> +#define DW_HSSI_CTRLR0_TMOD_OFFSET 10
> +#define DW_HSSI_CTRLR0_TMOD_MASK GENMASK(11, 10)
> +#define DW_HSSI_CTRLR0_SCPOL_OFFSET 9
> +#define DW_HSSI_CTRLR0_SCPH_OFFSET 8
> +#define DW_HSSI_CTRLR0_FRF_OFFSET 6
> +#define DW_HSSI_CTRLR0_DFS_OFFSET 0
>
> /*
> * For Keem Bay, CTRLR0[31] is used to select controller mode.
> * 0: SSI is slave
> * 1: SSI is master
> */
> -#define DWC_SSI_CTRLR0_KEEMBAY_MST BIT(31)
> +#define DW_HSSI_CTRLR0_KEEMBAY_MST BIT(31)
>
> /* Bit fields in CTRLR1 */
> -#define SPI_NDF_MASK GENMASK(15, 0)
> +#define DW_SPI_NDF_MASK GENMASK(15, 0)
>
> /* Bit fields in SR, 7 bits */
> -#define SR_MASK 0x7f /* cover 7 bits */
> -#define SR_BUSY (1 << 0)
> -#define SR_TF_NOT_FULL (1 << 1)
> -#define SR_TF_EMPT (1 << 2)
> -#define SR_RF_NOT_EMPT (1 << 3)
> -#define SR_RF_FULL (1 << 4)
> -#define SR_TX_ERR (1 << 5)
> -#define SR_DCOL (1 << 6)
> +#define DW_SPI_SR_MASK 0x7f /* cover 7 bits */
> +#define DW_SPI_SR_BUSY (1 << 0)
> +#define DW_SPI_SR_TF_NOT_FULL (1 << 1)
> +#define DW_SPI_SR_TF_EMPT (1 << 2)
> +#define DW_SPI_SR_RF_NOT_EMPT (1 << 3)
> +#define DW_SPI_SR_RF_FULL (1 << 4)
> +#define DW_SPI_SR_TX_ERR (1 << 5)
> +#define DW_SPI_SR_DCOL (1 << 6)
>
> /* Bit fields in ISR, IMR, RISR, 7 bits */
> -#define SPI_INT_TXEI (1 << 0)
> -#define SPI_INT_TXOI (1 << 1)
> -#define SPI_INT_RXUI (1 << 2)
> -#define SPI_INT_RXOI (1 << 3)
> -#define SPI_INT_RXFI (1 << 4)
> -#define SPI_INT_MSTI (1 << 5)
> +#define DW_SPI_INT_TXEI (1 << 0)
> +#define DW_SPI_INT_TXOI (1 << 1)
> +#define DW_SPI_INT_RXUI (1 << 2)
> +#define DW_SPI_INT_RXOI (1 << 3)
> +#define DW_SPI_INT_RXFI (1 << 4)
> +#define DW_SPI_INT_MSTI (1 << 5)
>
> /* Bit fields in DMACR */
> -#define SPI_DMA_RDMAE (1 << 0)
> -#define SPI_DMA_TDMAE (1 << 1)
> +#define DW_SPI_DMACR_RDMAE (1 << 0)
> +#define DW_SPI_DMACR_TDMAE (1 << 1)
>
> -#define SPI_WAIT_RETRIES 5
> -#define SPI_BUF_SIZE \
> +/* Mem/DMA operations helpers */
> +#define DW_SPI_WAIT_RETRIES 5
> +#define DW_SPI_BUF_SIZE \
> (sizeof_field(struct spi_mem_op, cmd.opcode) + \
> sizeof_field(struct spi_mem_op, addr.val) + 256)
> -#define SPI_GET_BYTE(_val, _idx) \
> +#define DW_SPI_GET_BYTE(_val, _idx) \
> ((_val) >> (BITS_PER_BYTE * (_idx)) & 0xff)
>
> /* DW SPI capabilities */
> #define DW_SPI_CAP_CS_OVERRIDE BIT(0)
> #define DW_SPI_CAP_KEEMBAY_MST BIT(1)
> -#define DW_SPI_CAP_DWC_SSI BIT(2)
> +#define DW_SPI_CAP_DWC_HSSI BIT(2)
> #define DW_SPI_CAP_DFS32 BIT(3)
>
> /* Slave spi_transfer/spi_mem_op related */
> @@ -162,7 +163,7 @@ struct dw_spi {
> unsigned int tx_len;
> void *rx;
> unsigned int rx_len;
> - u8 buf[SPI_BUF_SIZE];
> + u8 buf[DW_SPI_BUF_SIZE];
> int dma_mapped;
> u8 n_bytes; /* current is a 1/2 bytes op */
> irqreturn_t (*transfer_handler)(struct dw_spi *dws);
> @@ -224,18 +225,18 @@ static inline void dw_write_io_reg(struct dw_spi *dws, u32 offset, u32 val)
> }
> }
>
> -static inline void spi_enable_chip(struct dw_spi *dws, int enable)
> +static inline void dw_spi_enable_chip(struct dw_spi *dws, int enable)
> {
> dw_writel(dws, DW_SPI_SSIENR, (enable ? 1 : 0));
> }
>
> -static inline void spi_set_clk(struct dw_spi *dws, u16 div)
> +static inline void dw_spi_set_clk(struct dw_spi *dws, u16 div)
> {
> dw_writel(dws, DW_SPI_BAUDR, div);
> }
>
> /* Disable IRQ bits */
> -static inline void spi_mask_intr(struct dw_spi *dws, u32 mask)
> +static inline void dw_spi_mask_intr(struct dw_spi *dws, u32 mask)
> {
> u32 new_mask;
>
> @@ -244,7 +245,7 @@ static inline void spi_mask_intr(struct dw_spi *dws, u32 mask)
> }
>
> /* Enable IRQ bits */
> -static inline void spi_umask_intr(struct dw_spi *dws, u32 mask)
> +static inline void dw_spi_umask_intr(struct dw_spi *dws, u32 mask)
> {
> u32 new_mask;
>
> @@ -257,19 +258,19 @@ static inline void spi_umask_intr(struct dw_spi *dws, u32 mask)
> * and CS, then re-enables the controller back. Transmit and receive FIFO
> * buffers are cleared when the device is disabled.
> */
> -static inline void spi_reset_chip(struct dw_spi *dws)
> +static inline void dw_spi_reset_chip(struct dw_spi *dws)
> {
> - spi_enable_chip(dws, 0);
> - spi_mask_intr(dws, 0xff);
> + dw_spi_enable_chip(dws, 0);
> + dw_spi_mask_intr(dws, 0xff);
> dw_readl(dws, DW_SPI_ICR);
> dw_writel(dws, DW_SPI_SER, 0);
> - spi_enable_chip(dws, 1);
> + dw_spi_enable_chip(dws, 1);
> }
>
> -static inline void spi_shutdown_chip(struct dw_spi *dws)
> +static inline void dw_spi_shutdown_chip(struct dw_spi *dws)
> {
> - spi_enable_chip(dws, 0);
> - spi_set_clk(dws, 0);
> + dw_spi_enable_chip(dws, 0);
> + dw_spi_set_clk(dws, 0);
> }
>
> extern void dw_spi_set_cs(struct spi_device *spi, bool enable);
> @@ -293,4 +294,4 @@ static inline void dw_spi_dma_setup_generic(struct dw_spi *dws) {}
>
> #endif /* !CONFIG_SPI_DW_DMA */
>
> -#endif /* DW_SPI_HEADER_H */
> +#endif /* __SPI_DW_H__ */
> --
> 2.33.0
>
--
With Best Regards,
Andy Shevchenko
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